381475849 has 8 divisors (see below), whose sum is σ = 391067208. Its totient is φ = 371898240.

The previous prime is 381475841. The next prime is 381475879. The reversal of 381475849 is 948574183.

It can be written as a sum of positive squares in 4 ways, for example, as 49070025 + 332405824 = 7005^2 + 18232^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 381475849 - 2³ = 381475841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381475841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74479 + ... + 79435.

It is an arithmetic number, because the mean of its divisors is an integer number (48883401).

Almost surely, 2^381475849 is an apocalyptic number.

It is an amenable number.

381475849 is a deficient number, since it is larger than the sum of its proper divisors (9591359).

381475849 is a wasteful number, since it uses less digits than its factorization.

381475849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6875.

The product of its digits is 967680, while the sum is 49.

The square root of 381475849 is about 19531.4067337711. The cubic root of 381475849 is about 725.2521352133.

The spelling of 381475849 in words is "three hundred eighty-one million, four hundred seventy-five thousand, eight hundred forty-nine".